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<?php |
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/* |
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Copyright (c) 2016 Michal Čihař <[email protected]> |
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This file is part of SimpleMath. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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namespace SimpleMath\Expressions; |
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class Ternary extends Operator { |
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protected $precidence = 1; |
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protected $leftAssoc = false; |
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public function operate(\SimpleMath\Stack $stack, $variables=array()) { |
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if (! $this->isOpen()) { |
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$right = $stack->pop()->operate($stack, $variables); |
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$left = $stack->pop()->operate($stack, $variables); |
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return new TernaryIntermediate(array($left, $right)); |
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} else { |
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$right = $stack->pop()->operate($stack, $variables); |
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$left = $stack->pop()->operate($stack, $variables); |
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if ($right instanceof TernaryIntermediate) { |
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$right = $right->getValues(); |
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} else { |
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throw new \RuntimeException('Mismatched ternary operator!'); |
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} |
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if ($left) { |
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return $right[0]; |
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} else { |
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return $right[1]; |
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} |
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} |
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} |
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public function isOpen() { |
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return $this->value == '?'; |
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} |
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} |
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phpmyadmin /
simple-math
